UAL1931

UNITED AIRLINES INC · HAF → SFO

UAL1931 is operated by UNITED AIRLINES INC between Half Moon Bay Airport (KHAF) and San Francisco International Airport (KSFO). The flight is most often flown by a BOEING Boeing 737-800. Typical block time is 3h 26m. SkyMeter has observed 82 legs of this flight number via ADS-B.

✈
FLIGHTS
82
last 90 days
⏱
AVG DURATION
3h 26m
tracked time
📅
SERVICE PERIOD
05/28/2025 → 07/03/2026
first → last seen
🗺
ROUTES / TYPES
5 / 3
city pairs · airframes
⚠
INCIDENT RATE
1.2%
1 flagged

Routes flown

By count · last 90 days

4
KHAF → KSFO
4
avg 7h 26m · Half Moon Bay → San Francisco
KDEN → KSFO
2
avg 7h 18m · Denver → San Francisco
KOAK → KSFO
1
avg 7h 53m · Metropolitan Oakland → San Francisco
US-2362 → KSFO
1
avg 11m · San Mateo → San Francisco

Aircraft types

Equipment used on this number

3
B738 BOEING Boeing 737-800
80
B38M BOEING Boeing 737 MAX 8
4
B39M BOEING Boeing 737 MAX 9
2

Safety profile

Flagged flights · last 90 days

Go-arounds
1
Unstable approach
0
Rejected TO
0
Stall warnings
0
Overspeeds
0
Runway excursion
0
Counts represent flights with at least one occurrence of each flag, not the total event count. See /incidents for individual events.

Recent flights

Newest 30 operations of UAL1931

30
N36247BOEING Boeing 737-800
→
07/03/2026
1h 35m
No alerts
Replay Analysis
N76532BOEING Boeing 737-800
→
07/02/2026
1h 35m
No alerts
Replay Analysis
N37281BOEING Boeing 737-800
→
07/01/2026
1h 39m
No alerts
Replay Analysis
N37267BOEING Boeing 737-800
→
06/30/2026
1h 39m
No alerts
Replay Analysis
N37252BOEING Boeing 737-800
→
06/29/2026
1h 41m
No alerts
Replay Analysis
N37257BOEING Boeing 737 MAX 8
→
06/28/2026
7h 34m
No alerts
Replay Analysis
N17279BOEING Boeing 737 MAX 8
→
06/27/2026
7h 12m
No alerts
Replay Analysis
N73275BOEING Boeing 737-800
→
06/26/2026
7h 18m
No alerts
Replay Analysis
N35271BOEING Boeing 737-800
→
06/25/2026
1h 31m
No alerts
Replay Analysis
N78501BOEING Boeing 737-800
→
06/24/2026
2h 1m
No alerts
Replay Analysis
N14235BOEING Boeing 737-800
→
06/23/2026
1h 33m
No alerts
Replay Analysis
N36207BOEING Boeing 737-800
→
06/22/2026
1h 47m
No alerts
Replay Analysis
N33209BOEING Boeing 737-800
→
06/20/2026
1h 35m
No alerts
Replay Analysis
N33203BOEING Boeing 737-800
→
06/19/2026
7h 20m
No alerts
Replay Analysis
N76528BOEING Boeing 737-800
→
06/18/2026
1h 38m
No alerts
Replay Analysis
N34282BOEING Boeing 737-800
→
06/17/2026
1h 29m
No alerts
Replay Analysis
N77518BOEING Boeing 737-800
→
06/16/2026
7h 0m
No alerts
Replay Analysis
N17337BOEING Boeing 737 MAX 8
→
06/15/2026
1h 35m
No alerts
Replay Analysis
N77542BOEING Boeing 737-800
→
06/14/2026
1h 33m
No alerts
Replay Analysis
N78501BOEING Boeing 737-800
→
06/12/2026
1h 27m
No alerts
Replay Analysis
N76528BOEING Boeing 737-800
→
06/11/2026
6h 50m
No alerts
Replay Analysis
N77530BOEING Boeing 737-800
→
06/10/2026
1h 11m
No alerts
Replay Analysis
N86534BOEING Boeing 737-800
→
06/09/2026
7h 10m
No alerts
Replay Analysis
N12225BOEING Boeing 737-800
→
06/09/2026
10m
No alerts
Replay Analysis
N12225BOEING Boeing 737-800
→
06/08/2026
1h 29m
No alerts
Replay Analysis
N37277BOEING Boeing 737-800
→
06/06/2026
1h 35m
No alerts
Replay Analysis
N16234BOEING Boeing 737-800
→
06/05/2026
1h 35m
No alerts
Replay Analysis
N73278BOEING Boeing 737-800
→
06/04/2026
1h 41m
No alerts
Replay Analysis
N78540BOEING Boeing 737-800
→
06/03/2026
1h 36m
No alerts
Replay Analysis
N37253BOEING Boeing 737-800
→
06/02/2026
1h 38m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window